The ASPEN is a large tea strainer cup for making loose-leaf tea, cold-brew coffee or fruit-infused water. The cup and lid are made from durable heat-resistant glass. It comes with a laser-cut stainless steel tea infuser and lid. The lid, when removed, becomes a trivet to hold your tea infuser once the tea has steeped, and keep any drips from falling onto your table top. The ASPEN is a large glass cup with has a capacity of 400 ml / 14 fl oz.